Curl library for PocketMine-MP using curl_multi

libpmcurl uses SingletonTrait so it it automatically initialized when Curl::getInstance() is called for the first time

GET requests can be done with Curl::getInstance()->getRequest("https://example.com", function(?InternetRequestResult $result, ?string $error) {}) and POST requests can be done with Curl::getInstance()->postRequest("https://example.com", function(?InternetRequestResult $result, ?string $error) {}, ["headers"], "body")

Basic example:

public function onEnable() : void {
	Curl::getInstance()->getRequest("https://example.com", function(?InternetRequestResult $result, ?string $error) : void {
		var_dump($result, $error);
	});
}

Discord webhook example:

class Main extends PluginBase implements Listener {
	public function onEnable() : void {
		$this->getServer()->getPluginManager()->registerEvents($this, $this);
	}

	public function onChat(PlayerChatEvent $event) : void {
		Curl::getInstance()->postRequest("https://discord.com/api/webhooks/WEBHOOK_ID", function() : void {}, [], ["content" => $event->getMessage(), "username" => $event->getPlayer()->getName()]);
	}
}

Libasyncurl handles requests by creating an async task for every curl request. This means that a thread can only process one curl request at a time. This results in performance loss when doing multiple requests at once, as the threads are only doing one at a time. This library uses curl_multi on a single thread meaning the thread can process multiple requests at once, resulting in much better performance when sending multiple requests at a time.